This one isn't so much a story as it is a short bit of prose
designed to summarize the Nexus setting for any players that aren't
up to reading the entire setting document.

You live in the Nexus. There's a lot of different names for it,
official and unofficial, but that's what most people know it as.
There's nothing particularly remarkable about it, no wacky laws of
physics, no horrendous fauna, no incredibly advanced civilization.
Except, that is, for the gates.

Naturally occurring, and about as predictable as the weather
(which is to say more or less accurately), the gates allow anyone
to move from Nexus to a connecting reality. What's special about
Nexus is that it has a lot of connections, and with that many
connections they occur regularly.

Nexus is a city state at a point in its own reality where the
gates converge. The original inhabitants and civilization of it
have long been forgotten, assuming it wasn't just a community of
refugees, and later scholars, who happened upon it.

Imagine if you will a spider web. Nexus would be the center,
with each connecting strand a gate. True there are other points
with connecting strands, but nowhere with as many as Nexus.
Sometimes Nexus even gets unexpected connections to outlying
realities (ones that are newer or with more removed physical laws)
that pop up.